Daniel J Potter

US Patent:

6632200, Oct 14, 2003

Filed:

Dec 11, 2000

Appl. No.:

09/734391

Inventors:

Xiaoping Guo - Bloomington MN
Richard Stehr - Stillwater MN
Daniel J. Potter - Stillwater MN

Assignee:

St. Jude Medical, Daig Division - Minnetonka MN

International Classification:

A61M 500

US Classification:

604247, 60416704, 604256

Abstract:

A hemostasis cannula unit including a valve housing, a cap, and a hemostasis valve, wherein the hemostasis valve includes a proximal valve gasket and a distal valve gasket compressed against the valve gasket by the valve housing, wherein the proximal valve gasket is the same shape as the distal valve gasket.

US Patent:

7328071, Feb 5, 2008

Filed:

Oct 12, 2005

Appl. No.:

11/249968

Inventors:

Richard E. Stehr - Stillwater MN, US
Daniel J. Potter - Stillwater MN, US

Assignee:

Pacesetter, Inc. - Sylmar CA

International Classification:

A61B 19/00

US Classification:

607131, 600585, 606129

Abstract:

Lead placement apparatus to transmit electrical signals to stimulate selected body tissue includes an introducer handle supporting a tubular outer sheath of flexible resilient material including a rigid section and a deflectable section adjacent the distal end, enabling the deflectable section to deflect among a plurality of positions in orientations transverse of a longitudinal axis. An operative member on the introducer handle connected to the distal end of the outer sheath serves to move that distal end. An inner tubular sheath of flexible resilient material slidably received within the outer sheath includes a driving socket fixed to its distal end whereby, with a lead slidably received within the inner tubular sheath and including a driven socket fixed to its distal end for releasable mating engagement by the driving socket, an electrode at the distal tip of the lead can be advanced and directed to the selected body tissue for stimulation.

US Patent:

7731706, Jun 8, 2010

Filed:

Dec 29, 2006

Appl. No.:

11/647489

Inventors:

Daniel J. Potter - Stillwater MN, US

Assignee:

St. Jude Medical, Atrial Fibrillation Division, Inc. - St. Paul MN

International Classification:

A61M 25/00

US Classification:

604523

Abstract:

The invention relates to a steerable catheter having a distal section with reduced variation in deflection path during deflection. The distal section of the catheter includes stripes of different material hardness along the length of the distal section affecting the directionality of catheter deflection upon the application of a deflection force like that applied by pull wires. The stripes result in preferential bending in a desired path with greater reproducibility.

US Patent:

7879024, Feb 1, 2011

Filed:

Feb 4, 2005

Appl. No.:

11/052617

Inventors:

Chad A. Thorstenson - Andover MN, US
Richard E. Stehr - Stillwater MN, US
Omar Amirana - Minneapolis MN, US
Daniel J. Potter - Stillwater MN, US

Assignee:

St. Jude Medical, Atrial Fibrillation Division, Inc. - St. Paul MN

International Classification:

A61M 25/098

US Classification:

604529, 6041031

Abstract:

A splittable cannula includes a radiopaque marker placed at or near the distal end of the cannula. The radiopaque marker may be a unitary piece, or may consist of several portions. The cannula may include a sheath or catheter body with a grooved score line running along a portion of the sheath body and a radiopaque marker located at a distal end of the body and abutting the body. The radiopaque marker may be located within the lumen of the sheath, may be embedded in the sheath wall, or may be affixed to the external sheath wall. The radiopaque marker may be scored, notched, grooved, or contain apertures longitudinally. The notches, grooves, apertures, and/or score lines in both the sheath or catheter body and the radiopaque marker serve to provide a weakened tear path. An electrode lead may be coupled with the radiopaque marker.

US Patent:

7985232, Jul 26, 2011

Filed:

Jun 21, 2004

Appl. No.:

10/873705

Inventors:

Daniel J. Potter - Stillwater MN, US
Richard E. Stehr - Stillwater MN, US

Assignee:

St. Jude Medical, Atrial Fibrillation Division, Inc. - St. Paul MN

International Classification:

A61B 19/00
A61M 5/178

US Classification:

606129, 604160

Abstract:

A system for connecting a hemostasis valve to a splittable sheath includes an interface formed between a ledge on the proximal end of a cannula portion of the hemostasis valve and an engagement structure aligned with the handles of the splittable sheath. Pulling the handles to split the sheath likewise disengages the ledge from the engagement structure. A snap ring on the cannula portion engages a snap ring in the lumen of a sheath hub formed on the proximal end of the splittable sheath. An O-ring between the cannula portion and the sheath hub provides a fluid-tight seal.

US Patent:

8162934, Apr 24, 2012

Filed:

Dec 21, 2007

Appl. No.:

11/963441

Inventors:

Daniel J. Potter - Stillwater MN, US

Assignee:

St. Jude Medical, Atrial Fibrillation Division, Inc. - St. Paul MN

International Classification:

A61B 18/14

US Classification:

606 41, 606 34, 606 32, 604 9504

Abstract:

A medical catheter assembly includes a deflectable catheter shaft, a distal tip with tip element and a mounting shaft, and a pull ring assembly, the distal tip defining guide channels through which pull wires of the pull ring assembly pass such that the pull wires will initially extend from the pull ring toward the tip element and then loop back toward and through the catheter shaft and to a handle actuator. Pulling of the pull wires by the handle actuator to tilt the pull ring and deflect the catheter shaft will cause the pull ring to move toward tip element. The pull ring and tip element are thus interlocked. Stress forces on the connection joints between the pull wires and the pull ring will be dissipated, reducing the incidence of failure of the pull ring assembly. The medical catheter can be a non-irrigated ablation catheter wherein the tip element is a tip electrode, or an irrigated ablation catheter wherein the tip element is a tip electrode and a fluid manifold.

US Patent:

8226641, Jul 24, 2012

Filed:

Dec 21, 2007

Appl. No.:

11/963393

Inventors:

Daniel J. Potter - Stillwater MN, US

Assignee:

St. Jude Medical, Atrial Fibrillation Division, Inc. - St. Paul MN

International Classification:

A61B 18/18

US Classification:

606 41, 606 45

Abstract:

A medical catheter includes a deflectable and compressible catheter shaft; a pull ring near a distal end of the catheter shaft; a distal tip that includes a tip element and a mounting shaft; and an attachment apparatus for securely attaching the distal tip to the catheter shaft, the attachment apparatus including a compression ring which compresses the catheter shaft and the mounting shaft together. The compression ring can be located around the catheter shaft to compress the catheter shaft against an outer surface of the mounting shaft, or within the catheter shaft to compress the catheter shaft outwardly against an inner surface of the mounting shaft. The medical catheter can be an ablation catheter, with the tip element being a tip electrode, and it can be an irrigated ablation catheter, with the distal tip including a fluid manifold.

US Patent:

8371555, Feb 12, 2013

Filed:

Jan 4, 2005

Appl. No.:

11/029800

Inventors:

Claude Rickerd - Bloomington MN, US
Kirk Honour - Minnetonka MN, US
Daniel J. Potter - Stillwater MN, US

Assignee:

Pacesetter, Inc. - Sylmar CA

International Classification:

F16K 27/08

US Classification:

251367, 60416704, 604256

Abstract:

The present invention is a splittable multi-piece hemostasis valve that is held together in an assembled condition via a binder formed about the assembled valve. The binder may be a sleeve of thin polymer material shrink-wrapped about the valve. When the valve needs to be split in order to clear a medical device such as a pacemaker lead, the sleeve is split and the valve is disassembled.